Update ember-in-viewport

[kevinansfield]

no issue

• bumps ember-in-viewport too 3.2.2
• adds a fix for passing non-existent selectors to ember-in-viewport as occurs when there is no fixed header/footer and therefore no .lt-scrollable element

This was a necessary upgrade for us because the pinned version of ember-in-viewport has a bug in Safari that was causing our other uses of {{ember-infinity}} to fail. Upgrading the version of ember-in-viewport in our app (and forcing resolution via package.json) ran into the scrollableArea bug that is also fixed in this PR.

[alexander-alvarez]

Hey. Thanks for this. The reasoning behind the change looks 👍
Any ideas about the newly failing test?

not ok 132 Chrome 73.0 - [107 ms] - Integration | Component | lt infinity: it renders
    ---
        actual: >
            false
        expected: >
            true
        stack: >
            TypeError: Cannot read property 'destroy' of null
                at Class.destroy (http://localhost:7357/assets/vendor.js:175811:49)
                at http://localhost:7357/assets/vendor.js:19644:14
                at eachDestroyable (http://localhost:7357/assets/vendor.js:20064:9)
                at Container._Container$prototype.destroy (http://localhost:7357/assets/vendor.js:19642:5)
                at Backburner.run (http://localhost:7357/assets/vendor.js:18990:23)
                at Object.run (http://localhost:7357/assets/vendor.js:40988:27)
                at Class.willDestroy (http://localhost:7357/assets/vendor.js:22880:19)
                at Class.superWrapper [as willDestroy] (http://localhost:7357/assets/vendor.js:59170:22)
                at invokeWithOnError (http://localhost:7357/assets/vendor.js:18629:16)
                at Queue.flush (http://localhost:7357/assets/vendor.js:18688:9)
        message: >
            Cannot read property 'destroy' of null
        negative: >
            false
        Log: |
            { type: 'error',
              text: '\'TypeError: Cannot read property \\\'destroy\\\' of null\\n    at Class.destroy (http://localhost:7357/assets/vendor.js:175811:49)\\n    at http://localhost:7357/assets/vendor.js:19644:14\\n    at eachDestroyable (http://localhost:7357/assets/vendor.js:20064:9)\\n    at Container._Container$prototype.destroy (http://localhost:7357/assets/vendor.js:19642:5)\\n    at Backburner.run (http://localhost:7357/assets/vendor.js:18990:23)\\n    at Object.run (http://localhost:7357/assets/vendor.js:40988:27)\\n    at Class.willDestroy (http://localhost:7357/assets/vendor.js:22880:19)\\n    at Class.superWrapper [as willDestroy] (http://localhost:7357/assets/vendor.js:59170:22)\\n    at invokeWithOnError (http://localhost:7357/assets/vendor.js:18629:16)\\n    at Queue.flush (http://localhost:7357/assets/vendor.js:18688:9)\'\n' }

[snewcomer]

Could it possibly be b/c of this class syntax in this service in 2.12? https://github.com/DockYard/ember-in-viewport/blob/master/addon/services/-observer-admin.js#L16

[snewcomer]

Any updates here? I think if we wanted to upgrade here, we should update ember-light-table && it's travis config.

[fran-worley]

Closing in favour of #693 @kevinansfield I've pulled this into the work their which will include bumping the in-viewport version to 3.5.5 and adding a failing test case plus fix for the non-existent selectors thing you've raised here if it is still an issue. Thanks for you contribution!